Home / 70,900.13-106,367.16-20,299.86

Finding the Fourth Proportional to 70,900.13, 106,367.16 and 20,299.86

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Solution

The fourth proportional to 70,900.13, 106,367.16 and 20,299.86 is: 30,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,900.13 : 106,367.16 = 20,299.86 : x
  2. Step 2: Convert to fraction form
    70,900.13/106,367.16 = 20,299.86/x
  3. Step 3: Cross multiply
    70,900.13x = 106,367.16 × 20,299.86
  4. Step 4: Simplify right side
    70,900.13x = 2,159,237,924.76
  5. Step 5: Solve for x
    x = 2,159,237,924.76/70,900.13
  6. Step 6: Final answer
    x = 30,454.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.